Non-magnetic medical infusion device
AssigneeIradimed Corporation
InventorRoger E. Susi
Life of this patent
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Abstract
Liquid infusion apparatus includes non-magnetic materials in a pumping structure and drive motor therefor, and in a controller that supplies drive signals to the motor to facilitate convenient operation in intense magnetic fields without distorting the magnetic fields and without radiating objectionable radio-frequency interference. A non-MRI-compatible liquid infusion apparatus is temporarily replaced with MRI-compatible, non-magnetic liquid infusion apparatus without disconnecting patient from an installed intravenous infusion set to continue infusing liquid within the MRI environment.
Claims13
A method of temporarily replacing with a secondary MRI-compatible pump a primary liquid-infusing pump coupled through a primary intravenous (IV) injection set between a liquid source and a patient while preserving the patient's connection to the primary IV set, the method comprising:
- connecting the patient to the primary IV set, wherein tubing of the primary IV set is used with the primary liquid-infusing pump;
- after connecting the patient to the primary IV set, infusing liquid into the patient through the primary IV set with the primary pump;
- after infusing liquid into the patient through the primary IV set with the primary pump, inhibiting fluid flow through the primary IV set;
- after infusing liquid into the patient through the primary IV set with the primary pump, connecting a secondary IV set to the primary IV set establishing fluid connections at locations upstream and downstream of the primary pump while preserving the patient's primary IV set connection to the liquid source, wherein tubing of the secondary IV set is used with the secondary pump;
- and
- after connecting the secondary IV set to the primary IV set, infusing liquid into the patient through the connection thereof to the primary IV set and through the secondary pump and secondary IV set.
A method of replacing a first liquid-infusing pump with a second MRI-compatible liquid infusing pump, comprising:
- stopping flow of liquid through a first set of IV tubing components used with the first liquid-infusing pump, wherein the first set of IV tubing components provides a conduit for fluid flow from an IV fluid container to a patient with a rate of fluid flow through the first set of IV tubing components controlled by the first liquid-infusing pump;
- connecting a second set of IV tubing components used with the second liquid-infusing pump to the first set of IV tubing components at locations upstream and downstream of the first liquid-infusing pump without disconnecting the first set of IV tubing components, so that the second set of IV tubing components provides a conduit for fluid flow that bypasses a pumping section of the first set of tubing components without breaking the first set of IV tubing's connection from the IV fluid container to the patient;
- after stopping flow of liquid through the first set of IV tubing components, disconnecting the first liquid-infusing pump from the first set of IV tubing components;
- after stopping flow of liquid through the first set of IV tubing components, connecting the second liquid-infusing pump with the second set of IV tubing components;
- and
- controlling flow of liquid through the second set of IV tubing components using the second liquid-infusing pump.
Dependencies are inferred from the claim text.